The nurse is about to administer a medication to a client with whom the nurse is unfamiliar. To verify the client's identity, the nurse should （）.

A．ask the client his name.

B．check the name posted outside the client's room.

C．ask a family member the identity of the client.

D．check the client's identification bracelet.

为什么原煤含泥量大的时候一般采取选前脱泥工艺？